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Agricultural chemicals
Includes chemicals designed for agricultural use for protection of crops from fungus and insects, as well as for the growth and protection of plants.
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Add a new termContributors in Agricultural chemicals
Agricultural chemicals > Pesticides 
water-source heat pump
Agricultural chemicals; Pesticides
Heat pump that uses wells or heat exchangers to transfer heat from water to the inside of a building. Most such units use ground water. (See: groundsource heat pump; heat pump.)
waterborne disease outbreak
Agricultural chemicals; Pesticides
The significant occurence of acute illness associated with drinking water from a public water system that is deficient in treatment, as determined by appropriate local or state ...
watershed
Agricultural chemicals; Pesticides
The land area that drains into a stream; the watershed for a major river may encompass a number of smaller watersheds that ultimately combine at a common point.
watershed approach
Agricultural chemicals; Pesticides
A coordinated framework for environmental management that focuses public and private efforts on the highest priority problems within hydrologically-defined geographic areas taking ...
watershed area
Agricultural chemicals; Pesticides
A topographic area within a line drawn connecting the highest points uphill of a drinking waterintake into which overland flow drains.
weight of scientific evidence
Agricultural chemicals; Pesticides
Considerations in assessing the interpretation of published information about toxicity--quality of testing methods, size and power of study design, consistency of results across ...
weir
Agricultural chemicals; Pesticides
1. A wall or plate placed in an open channel to measure the flow of water. 2. A wall or obstruction used to control flow from settling tanks and clarifiers to ensure a uniform ...
Sub-categories
- Fungicides (58)
- Herbicides (125)
- Insecticides (20)
- Nitrogen fertilizers (16)
- Organic fertilizers (43)
- Pesticides (35135)
- Potassium fertilizers (300)
- Urea (21)